Great. Now do tennis players. Or swimmers. Or weightlifters. Or javelin thowers. Or skiers. Or speed skaters. Or cyclists. Why are "black people" genetically better at sports, but only a few sports? Is it possible that there are other factors at play than "black man go zoom"? How does this fit into your theories about IQ?

I could just as easily replace "black" on your list with "tall" or "right-handed" or "brown-eyed." I'm so tired of this inability to see past a simple causation/correlation fallacy. But let me put it very simply for you:

People with brown skin are not all the same genetically. Some people with brown skin are more genetically similar to you than they are to other people with brown skin.

Genes determine atheltic ability in particular sports. Of course. They also determine skin colour. They also determine which is your dominant hand. They also determine your height. They also determine a million other things. You only think one of those things is meaningful in this context. Why is that?